Carl cederberg



(No Model.) 2 SheetsSheet 1. O. GEDERBERG. VBNETIAN BLIND.

Patented Dec. 8, 1896.

(No Model.) 2 Sheet--8heet 2.

C. GEDERBERG. VENETIAN BLIND.

No. 572,927. Patented Dec. 8, 1896.

in: NpRms PEYERS co vnoruumu. wnsnmamm u. c.

llNiTED STATES PATENT OEETCE,

CARL OEDERBERG, OF SYDNEY, NEW SOUTH ALES, ASSIGNOR TO HENRY SHUTE, OFASI'IFlELD, NEIV SOUTH \VALES.

VENETIAN BLIND.

SPECIFICATION forming part of Letters Patent No. 572,927, dated December8, 1896.

Application filed April 80, 1895. Serial No. 547,705. (No model.)Patented in England December Z7,1894,No. 25,13'7.

To all whom it may concern.-

Be it known that I, CARL CEDERBERG, painter, of Harris Street, Sydney,in the Colony of New South Wales, have invented a new and usefulImprovement in Venetian Blinds and in the llleansEmployed for Operatingand Adjusting the Slats of Same; and I do hereby declare that thefollowing is a full, clear, and exact description of the invention,which will :0 enable others skilled in the art to which it appertains tomake and use the same.

The invention has been patented in England December 27, 1894, No.25,137.

My invention has for its object the improved construction of Venetianblinds, so as to render them more durable and of easier adj ustment. Forthis purpose I dispense with what are known as ladder-tapes, which areused to keep the slats equidistant, and which also serve to retain themin their true lateral position, and in lieu thereof I provide apeculiarly-constructed linked suspender made of any suitable metal.

It consists of a series of loops, which while they are joined to eachother by bands yet are capable of being folded the one onto the otherwithout proving an obstruction to the slats when it is desired to changetheir position. The aforesaid bands connecting the 0 loops are so shapedthat the folding movement is carried out alternately throughout theentire length of the blind, commencing at the lowest part, where thefirst pair of slats are drawn together, and continuing upward ac- 3 5cording to the height to which it is desired to raise the blind, and thefolding may (according to the relative. position occupied by the bands)be performed either between the slats or outside of them. These bandsare ap- 4o plied to each pair of loops, and a trefoil hinge is used toconnect them, two of the joints in the hinge being used for the loopsand the third joint for connecting the slat-supports, which are alsocomposed of metal.

5 A further improvement consists in the use of loop suspenders, which Iattach to the headpiece of the blind carrying the cord-rollers. Thesesuspenders are made of sufficient length to admit of a rising movementbeing imparted to that portion of my blind which I call thelink-carrier, which is provided at each end with a grooved bearing-platewhich fits in the aforesaid loop suspenders and is capable of beingoscillated, so as to change the slant of the slats, as may be desired.The grooved 5 5 bearing-plates can be made (at the will of the personoperating the blind) to rise until they come in contact with thehead-piece of the blind, but this only takes place when the whole of theslats are drawn tightly together by means of the lifting-cords.

Afurther improvement consists in the use of a cord-holder, which Iattach to the headpiece of my blind in such a position that it will comeinto contact with the lifting-cords which are used for raising orlowering the slats and also for operating the link suspenders. Thiscordholder consists of a combined chair, the foot-piece of whichis alsoformed into a chock and serves as an adjunct to the gripping device,which is supported in the aforesaid chair. This gripping device consistsof a pivoted plate, one end of which is roughened or serrated, groovedor chambered, so as to give the necessary holding power when broughtinto contact with the cords. The other end of this gripping-plate isprovided with a fork, which passes over the lifting-cords when the plateis operated and offers no obstruction to the rising movements of thecords when they are operated in the releasing direction. This forked endis made, preferably, curved inward and carries an eX- tended bar for theoperating-cord and also has/a spring-pressure plate for a spring-leverattachment, which is secured to the aforesaid chair. This spring servesto keep the pivoted plate in such a position that when the attendantreleases the lifting-cords of the blind the blind cannot of its ownaccord de- 0 scend; but if the attendant should pull the cord which Iattach to the aforesaid extended arm, against which the springlever ispressing, the lifting-cords will be released from the gripper and theblind may be allowed to 9 5 descend to its full length. Immediately thecord attached to the extended arm is released the gripper is again putinto action by the spring-lever, and although in its normal position thegripping device is always ready to act upon the lifting-cords yet if theliftingcords are drawn so as to raise the blind my gripping device willoffer no obstruction to the cords.

With these various improvements I construct a complete and novelVenetian blind having all the necessary rising, falling, slanting, andfolding movements and also the necessary check action to retain theblind at any desired height.

By dispensing with the wooden slats, such as Venetian blinds are usuallycomposed of, and substituting metal I am able by reason of mypeculiarlyconstructed link suspenders, which are also of metal, and alsoby providing wire cords or chains, to construct a blind suitable forfireproof purposes, and which will answer the same purposes as metalsliding doors, such as are now in general use. If my blind is used as asubstitute for such doors, the advantage I claim for it is that it maybe put into a limited space, such as a cavity or recess, when it isdesired to provide ingress or egress through the doorway. In order tosecure the slats in a folded position, so that one will overlap againstthe other, I provide a locking-bar or a series of lockingbars suitablyattached to any desired number of the slats and the head-piece.

My invention is illustrated by the accompanying drawings, in whichsimilar parts throughout the different figures are lettered similarlyfor identification.

Figure 1 is a side view of a Venetian blind fitted with my improvements.Fig. 2 is an end view of Fig. 1, taken at the end where thelifting-cords are operated. Fig. 3 is a detail of the linked suspenderwith the parts opened out. Fig. a is a perspective view of my cordholderattached to head-piece, also link-carrier and loop suspenders. Fig. 5 isa detail of loop suspender. Fig. 6 is a further detail of Fig. 3,showing the folding movement of the linked suspender. Fig. 7 is a sideview of a fireproof blind, showing method of securing the slats in aslanting position. Fig. 8 is a detail of the locking-bar. Fig. 0 is a11-other view of my cord-holder shown in Fig. at, with chair removed toshow position of chock.

The head-piece A may be supported in any convenient manner, according tothe position where it is desired to place the blind. It contains theusual cord-rollers l for the liftingcords O, which pass down through theslats D and are secured to the bottom portion E. The leading-rollers Fare used for separating the cords C, so that they pass under the pivotedplate G, which serves the purpose of a cord-holder by using the bottomend II as a gripping-surface. The forked end Z of G is so constructed asto provide clearance for the traveling cords 0 when the position of G isaltered by the person operating the blind. G is supported in thecombined chair J by means of pivots K, the chock L being placed in theposition shown, between J J, so as to cause a kink to be formed in thecords C when H is brought in contact with them. The extended bar M mayform an integral part of G, and to it the operating-cord N is secured.The pressure-spring 0, one end of which is brought in contact with M,serves to keep G always in its operating position.

The top movable portion of the blind, which I term the link-carrier P,serves as a support for the mechanism used for carrying and operatingthe slats. To the ends of P, I attach the grooved bearing-plates Q,which are supported and will oscillate in the loop suspenders R, whichare supported to the under side, in any convenient way, of A. The bentportion of R forms a seating or bearing for Q, so as to admit of I"being placed in a slanting position. The upper portions of R areparallel and are of sufficient length to admit of the same liftingmovement being imparted to D and E by the lifting-cords O. This risingmovement is shown in dotted lines in Fig. 5.

The mechanism forming the link suspendcrs consists of the hinged plateS, secured to P and the bottom to E. One of the connecting-loops T isinserted therein and also in the folding-band II. This folding-band isprovided with shoulder-pieces V, which serve to keep the loops T intheir right position and to insure their folding in the desireddirection when. the slats are being drawn together. The trefoil hinge XValso receives the connecting-loops T, as shown in Fig. 3, and also theslat-supports.

lVhcn the lifting movement is imparted to the slats, the various partsof the mechanism will fold together in the manner shown in Fig. 6 andwill occupy a position between the' slats D. By reversing thefolding-bands U, so that the shoulder-pieces are outside instead ofinside, as shown in Fig. 3, then the folding movement imparted by themto the connecting-loops T will cause them to assume a projectingposition outside the slats instead of between them. This movement formspart of my invention, but I do not consider it to be so useful as thefoldingmovement between the slats.

When constructing a fireproof blind according to this invention theslats D are composed of metal, as are also the other parts accessible toheat or flame. The mechanism in all its particulars will be similar tothat described for an ordinary blind, but proportionately stronger, andto give greater security to the blind, when the slats are placed in aslanting position I use the locking-bars Y. (Shown in Figs. 7 and 8.)These are secured to A by inserting the upper end in the metal pocket Zand the lower end in the foot-piece A, which may be either attached to Eor to a permanent portion of the structure. The contact-plates B areprojections formed upon the inside of Y and are made to press againstthe slats, so as to prevent their forcible disarrangement.

I-Iaving now particularly described and ascertained the nature of mysaid invention and the manner in which the same is carried into effect,I declare that What I claim is 1. In aVenetian blind, the combination ofthe head-piece, the series of slats with the lifting-cord, the links,the link-carrier P and the connection between the link-carrier and thehead-piece consisting of the loop R depending from the head-piece andhaving parallel sides with a cross-piece at their lower end and thegrooved bearing-plates Q en gaging the dependingloop, said plates beingcarried by the ends of the link carrier plate whereby the blind may beraised against the head-piece or inclined in the said loop, substantially as described.

2. A Venetian blind comprising the head piece, the lifting-cords, theseries of slats and the links carrying the same and consisting of theloops '1, the hinge-bars IV of trefoil form and having the three eyes,the cross-bars a: carried by the said hinge-bars and the crosspieces Vconnecting the loops T, said crosspieces having lugs at their endsengaging the loops T, substantially as described.

3. In a Venetian blind, the combination of the head-piece, the slots,the operating-cords, and the controlling device for the cord comprisingthe pivoted plate forked at one end to avoid contact with the cord andhaving a foot H at the other end to engage the cord, the chock-piece Larranged on the head-piece adjacent to the foot II and adapted therewithto form a kink in the cord and means for operating the controllingdevice.

4:. In combination in a Venetian blind, the series of slats Withsupporting and operating means therefor, and the locking deviceconsisting of the bar having bearings at the top and bottom of theblind, said bar having projections 13 arranged to engage the edges ofthe slats, substantially as described.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

CARL CEDERBERG.

Witnesses:

JOHNJ. ST NE, HARRY A. SMEDLEY.

